Home / 81,395.15-122,054.45-31,498.74

Finding the Fourth Proportional to 81,395.15, 122,054.45 and 31,498.74

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Solution

The fourth proportional to 81,395.15, 122,054.45 and 31,498.74 is: 47,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,395.15 : 122,054.45 = 31,498.74 : x
  2. Step 2: Convert to fraction form
    81,395.15/122,054.45 = 31,498.74/x
  3. Step 3: Cross multiply
    81,395.15x = 122,054.45 × 31,498.74
  4. Step 4: Simplify right side
    81,395.15x = 3,844,561,228.90
  5. Step 5: Solve for x
    x = 3,844,561,228.90/81,395.15
  6. Step 6: Final answer
    x = 47,233.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.